Level: Idiot (Me)
I have a matrix of 3 columns and lots of rows M
- First column is latitude in degrees
- Second column is longitude in degrees
- Third column is data
So I set lambda:=M(..,1) and phi_g:=M(..,2) giving me two column vectors.
I want to convert lambda and phi_g to polar coordinates theta and phi
theta:=90-lambda produces "Error, (in rtable/Sum) invalid arguments"
I also want to convert phi_g to phi where phi=phi_g when phi_g is 0...180 and phi=phi_g +360 when phi_g <0
How do I create a conditional function like this?